Combined square and compass



July 10, 1951 E. PEEPLES COMBINED SQUARE AND COMPASS Filed Oct-. 14, 1948 MEPeepZes \N m N m m 3 .iiiimfiwgwxmaw w m mm N m WNII I m. 0N w IF b bfu lm IIINRII Iv O 1 f Patented July 10, 1951 v UNITED STATES PATENT OFFICE This invention relates to hand saws.

An object of this invention is to provide in a hand saw, a straight edge on the back of the saw blade provided with a linear scale on one or both 1 Claim. (Cl. 7-13) With the above and other objects in view, my invention consists in the arrangement, combination and details of construction disclosed in the drawing and specification, and then more sides, the blade adjacent the forward end of 5 particularly pointed out in the appended claim.

the handle having a miter element secured to one side of the blade, and the blade having a square element on the opposite side thereof at the beginning of the scale.

Another object of this invention is to provide in a hand saw, a protractor scale on one or both sides of the blade, with certain of the radii extended outwardly from the scale respectively to the back edge and to the toothed edge of the saw so that selected lines may be lined up with an edge or other portion of a board and the back edge used as a straight edge along which the board may be marked.

A further object of this invention is to provide a multi-purpose saw which will eliminate the carrying of a square or miter;

A further object of this invention is to provide a multi-purpose saw having a straight back edge formed with a linearscale and a right angularly disposed bar fixed to one side of the blade and forming a square with the back edge. The bar at its upper end has projecting laterally therefrom a point which is in line with the zero mark of the scale. This point serves a multipurpose in that the point may be projected partly into a board and used as a center point or axis so that a pencil or other marker may be positioned at a selected point along the scale and the saw revolved about the point. This point also provides a scriber for use in measuring a board so that the length of the board may be accurately determined.

A further object of this invention is to provide as an attachment for a saw blade, a squareforming bar adapted to be fixed to the blade and co-operating with the straight back edge of the blade in forming a square. The bar also includes the combined scriber and axis point projecting laterally therefrom whereby circles or arcs may be formed on a board.

A further object of this invention is to provide square and miter forming bars for attachment to the opposite sides of a hand saw blade, with the bars terminating in spaced relation to the toothed edge and with the lower forward corners of the bars rounded off so that the bars will not mar the board if they should strike the latter, and so that the toothed edge of the blade may be freely used to its extreme rear edge in normal sawing.

wood.

In the drawings, v

Figure 1 is a detailside elevation, partly broken away, of a hand saw constructed according toan embodiment of this invention,

Figure 2 is a fragmentary plan view of the saw,

Figure 3 is a sectional view taken on the line 33 of Figure 1,

Figure 4 is a fragmentary sectional view taken on the line 4-4 of Figure 1,

Figure 5 is a perspective view of the combined square forming bar, scriber and axis point for mountin on one face or side of the saw.

Referring to' the drawing the numeral 19 designates generally an elongated saw blade which is provided with saw teeth H along one edge thereof and is formed with astraight back edge Ill. The blade Ill has secured to the rear end thereof a handle l3 formed with a slot M with- ,in which the blade H! engages, and the blade I!) is secured to the handle is by fastening means 15.

The blade l0 along the straight back edge I2 thereof is provided with a linear scale I6, and as shown in Figure l the back edge l2 of the blade ll] projects a short distance above the upper edge ll of the handle I3 so that the entire length of the back edge l2 may be used asa straight edge and the linear scale l6 begins at a point slightly forward from the rear end of the 35 blade I.

The blade H) has fixed to one side 18 thereof a narrow bar 59 constituting a square forming bar which is fixed to the blade H] by fastening means 20, The lower forward corner of the square forming bar it is rounded off as indicated at 2i so that when the saw blade is used in normal sawing operation the lower forward corner of the bar [9 will not mar the wood in the event the lower corner of the bar l9 should strike the The bar l9 has extending from the upper forward corner thereof and coplanar with the zero indication 22 of the scale l6, a combined scriber and axis point 23. This point 23 projects laterally of the bar l9 and is preferably formed integral with the bar. The forward end of the handle 23 is squared off and abuts against the rear side of the bar It as indicated at 24. The bar 19 forms a guard for the forward end of the handle l3 at one side of the blade it so that 3 the handle will not be injured by contact with a board or the like.

The opposite side of the handle [3 is out oil on an angle of forty-five degrees from the upper edge ll thereof as indicated at 25 and an angled miter forming bar 26 is secured by fastening means 2! to the opposite face of the blade IE). The miter bar 28 extends downwardly and rearwardly and the lower forward corner of the miter bar 26 is rounded oi? as indicated at 28 so that the work will not be injured by engagement of the lower corner of the bar therewith.

The blade I!) has impressed on one or both sides thereof a circle protractor scale 29 and the scale 29 has certain radii 30 thereof extended to the toothed and straight edges respectively of the blade H] so that the blade l may be laid on one face of a board with one extended line 30 in alignment with an edge of the board, thereby disposing the straight edge l2 on a selected angular line or position with respect to the adjacent straight edge of the board. The straight edge !2 of the blade ll} may then be used for marking a out which is to be made on an angle in the board.

In the use and operation of this saw, the blade I0 may be used in a conventional manner for cutting a board orthe like and if it is desired to measure the length of the board the scale l2 may be used for measuring such length. In measuring the length of the board the forward end of the blade IE3 is disposed at one point on the surface of the board and the combined scriber and axis point- 23 may then be scratched on the board surface. The blade may then be stepped along the length of the board with a scratched mark being made at selected points. In the event it is desired to inscribe a circle or are on the board or other surface, the point 23 may be used as an axis point and a pencil or other l marker disposed at a selected point along the scale [5 whereupon the blade l6 may be rotate about the point 23.

With a combined saw, square and miter constructed according to an embodiment of this invention, the carpenter or cabinet maker will not be required to carry the usual square, miter or other angle forming tools inasmuch as this saw combines a plurality of tools which are nor mally used by a carpenter.

It will be noted from the disclosure herein that I have provided a multi-purpose tool of great value to carpenters which will save them 4 at a conservative estimate, approximately fifty percent of their time on a job, as with the use of this tool they will have in one handy device a try square, a framing square, a miter, a saw, a rule, a scriber and a point marker. The specific uses of the various elements are readily obvious and easily appreciated by anyone working with these various tools. The point marker or point 23 when the saw is laid on a board or roof or bench will prevent the saw sliding off and being damaged from contact with the ground or other surface. All of these desirable objects are furthermore accomplished without adding more than a negligible amount of weight over what an ordinary saw would weigh. All op erations are accomplished by a mere flip of the saw from one position to another, no moving parts being involved and no adjustments of elements being required for observing any of the functions of this device."

I do not mean to confine myself to the exact details of construction herein disclosed but claim all variations falling within the purview of the appended claim.

What I claim is:

A handle for a fiat tool having a straight back edge, and a scale along said back edge, comprised of an apertured hand gripping portion and a slotted portion adapted to extend on opposite sides of said tool, the edge of said slotted portion on one side of said tool terminating adjacent the zero point of said scale, and extending at right angles to said straight edge, and the edge of the slotted portion on the other side of said tool extending along said tool beyond said zero point, a miter bar secured to said tool in abutting relation with each of the edges of said slotted portion and on opposite sides of said tool, and a scribing point formed on said miter bar adjacent to said edge of said slotted portion on said one side of said tool at the zero point of The following references are of record in the file of this patent:

UNITED STATES PATENTS Number Name Date 782,396 Hiers Feb. 14, 1905 1,664,906 Sulik Apr. 3, 1928 

